Hammer head



FIG. 1 is a front view of my hammer-head;

FIG. 2 is a back view of my hammer-head;

FIG. 3 is a right-side view of my hammer-head;

FIG. 4 is a left-side view of my hammer-head;

FIG. 5 is a top view of my hammer-head;

FIG. 6 is a bottom view of my hammer-head; and,

FIG. 7 is a perspective view of my hammer-head.

The broken lines in FIG. 6 illustrate portions of the design that form no part of the claim. 

The ornamental design for a hammer-head, substantially as shown and described. 